pub mod host_app;
pub mod host {
    pub fn add_host_by_name(s: String) {
        println!("host nmae is ={}", s);
        let s1 = String::from("tic");
        let s2 = String::from("tac");
        let s3 = String::from("toe");
        let s = format!("{s1}-{s2}-{s3}");
        println!("s1={}  {}", s1, s);
        let s4 = s1.clone() + &*s2 + &*s3;
        println!("s1={}  {}", s1, s4);
    }
}

pub mod hs {}
